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d ATTORNEY Patented Sept. 29, 1936 UNITED STATES PATENT OFFICEInternational Door Company, a corporation of Illinois Evansville, Ind.,

Application November 5, 1935, Serial No. 48,389

19 Claims.

My invention relates broadly to revolving doors and more particularly toan improved construction of revolving door hardware.

One of the objects of my invention is to provide a construction ofhardware for revolving doors in which an air-tight system of joints isprovided for the revolving door structure.

Another object of my invention is to provide a construction of revolvingdoor hardware having means for sealing the inner longitudinallyextending edge portions of the hardware carried by the revolving doorwings with respect to the central shaft of the revolving door.

Still another object of my invention is to provide a construction ofjoint between the revolving door shaft housing and the inner edgeportions of the wings of the revolving door, formed by complementarymembers interengaging each other for forming a substantially air andmoistare-tight joint between the revolving door wings and the centralshaft.

A further object of my invention is to provide a construction ofrevolving door hardware which is capable of being extruded in thedesired contour for rendering the manufacture and production of therevolving door hardware relatively simple and inexpensive.

A still further object of my invention is to provide a construction ofrevolving door hardware in which supporting discs for the revolvingdoors are grooved on both the upper and lower surfaces thereof and serveas guide means for the wings of the revolving door'during a collapsingo; a reassembling operation thereof.

Another object of my invention is to provide an arrangement of guidegrooves for the supporting discs of revolving door hardware wherein thegrooves are disposed on the upper and lower surfaces of the supportingdiscs, and wherein one of the grooves is disposed in an annular path andanother of the grooves is disposed in a quadrilateral path. f

A further object of my invention is to provide a construction of discsupport for revolving door hardware co-acting with a pressure equalizedlatching mechanism for controlling the yieldable engagement of aprojecting member carried by the door wing with respect to the notchedperipheral edge of the disc support. a

A still further object of my invention is to provide a construction ofmanually operated retracting mechanism for rendering the springmechanism of the latch of a revolving door wing ineffective with respectto a revolving door supporting disc, for allowing the door wings to bereadily moved to collapsed position.

Other and further objects of my invention reside in the construction ofcollapsible revolving door hardware whereby the wings of a revolvingdoor may be moved to a position in which the planes thereof are paralleland immediately adjacent each other under conditions of panic or underconditions wherein it is desirable to manually shift the door wingsindividually to a position adjacent one side of the drum of therevolving door, as set forth more fully in the specification hereinafterfollowing by reference to the accompanying drawings, in

which: 5

Figure 1 is an elevational view showing the revolving door mechanism ofmy invention applied to'a revolving door in assembled position; Fig. 2is a horizontal sectional view taken on line 2--2 of Fig. 1; Fig; 3 isan enlarged lateral sectional view showing the position of the revolvingdoor hardware, where three of the wings are shown moved to collapsedposition while one of the wings remains in assembled position, thesupporting disc and the wing supports for the door wings being shown inplan; Fig. 4 is a horizontal sectional view through one of the winghangers and illustrates a portion of the disc support for showing theseal between the inner edge of the wing and the central shaft of therevolving door; Fig. 5 is a horizontal sectional view taken through awing hanger substantially on line 5-5 of Fig. 6 and showing parts of thewing hanger-in cross-section, and a portion of the disc in plan view;Fig. 6 is a vertical sectional view through the door wing hanger, thesupporting disc and a portion of the supporting shaft and vertical sealof the revolving door hardware; Fig. 7 is a fragmentary view showing thearrangement of the equalizing and balancing parts employed inthe rollerlocking means showing the actuator moved to roller locking position;Fig. 8 is a vertical sectional view taken on line 8--8 of the winghanger illustrated in Fig. 7; Fig. 9 is a side elevational view of theextruded body structure 2 of the wing hanger forming part of therevolving door hardware; Fig. 10 is a vertical sectional view takenthrough the extruded bosses of the body portion 2 of the wing hanger;Fig. 11 is a plan view of the extruded body portion 2 of the winghanger; Fig. 12 is an elevational view of the roller mounting meansemployed in association with the wing hanger and illustrating the mannerof connection of the tripping means with the roller carparts of theshaft housing by which the discs of the revolving door hardware aresupported; Fig. 15 is a cross-sectional view through the revolving doorshaft and housing assembled in relation thereto; Fig. 16 is aperspective view of the sealing edge which is provided at the inner edgeof the door wing for engagement with the complementary shaped shafthousing; Fig. 17 is a plan view of the upper face of one of the discsfor the revolving door hardware; Fig. 18 is a plan view mowing the lowerface of the revolving door discs illustrated in Fig. 17; Fig. 19 is across-sectional view through the disc taken on line l9l9 of Fig.17; Fig.20 is a perspective view showing the sections of the sealing edgeprovided for each of the inner edges of the revolving door wings forcoaction with the longitudinally extending grooved recesses in the shafthousing illustrated in Fig. 14; Fig. 21 is an elevational view of one ofthe escutcheon plates used in the revolving door hardware of myinvention; Fig. 22 is a plan view of one of the arcuate shaped shoesemployed in the groove in one face of the disc of the revolving doorhardware; Fig. 23 is a plan view of the shoe employed in thequadrilaterally arranged grooves in the other face of the disc; Fig. v24is a detailed view showing the yoke member employed for effecting themanual release of the roller locking mechanism; Fig. 25 is a view of thedevice illustrated in Fig. 24 taken on line 25-25 thereof; Fig. 26 is aplan view of the roller locking release trigger; Fig. 27 is a sectionalview taken through the roller locking release trigger taken on line2l--2l of Fig. 26; and Fig. 28 illustrates the method employed formanufacturing the structural shaped member in the revolving doormechanism of my invention by extruding the metal through a preformedspecial die.

My invention is directed to an improved construction of hardware forrevolving doors and particularly to a construction of hardware which maybe inexpensively manufactured on a quantity production basis, and willmeet all requirements of revolving door installations. With the rapidspread of air-conditioning systems in restaurants, theatres, and publicplaces, the necessity for sealing the joints between the inner edges ofthe door wings and the revolving door shaft has become of very greatimportance. My invention provides means both weather-proof and air-tightto prevent the leakage of air or moisture between the revolving doorshaft and the inner edges of the door wings. The special sectionsemployed in the wing hangers and in thesealing elements are all of suchconstruction as may be readily extruded through a preformed die shapedto the desired section.

I provide a construction of disc for supporting the door hangers'havingan annulargroove on one face and quadrilaterally disposed grooves on theopposite face with shoe members connected with the wing hangers andengaged in each of the grooves and guided thereby for insuring theprecision guiding of the door wings under con- 'Referring to thedrawings in detail, reference character I designates the central discformed from rolled bronze or other suitable material.

Both the upper' and lower hardware mechanisms are identical inconstruction, except that the face of disc 5 is directed upwardly forthe upper hardware and downwardly for the lower hardware. Looking at theface of disc i, there is provided an annular groove 23 which is shownmore clearly in the cross-sectional view in Fig. 19, and in Figs. 4 and5. In addition to the annular groove 23 in one face of disc 3, I providesets of quadrilateraly disposed grooves 25 in the opposite face of discI. The sets of quadrilaterally disposed grooves 24 do not communicatewith the annular groove 23 but are arranged in opposite faces of thedisc I. The grooves 23 and 24 serve different guide means which I haveindicated at l2 and 9, respectively. The guide means operative inannular groove 23 is in the form of a shoe I2 carried by pin H. Theguide means operative in quadrilateraly disposed grooves 24 is in theform of a shoe 3 rounded at opposite ends thereof and pivoted on pin itThe ends of the quadrilateraly disposed grooves 24 intersect and overlapat the corners to prc vide enlarged recesses indicated at 26 foraffording a longer path of travel for the shoes 9.

In the disclosure of my invention as illustrated, I have shown thecomplementary sealing means as including a beaded member on the doorwing and a coacting recess on the revolving door shaft, butthe'positions of the beaded member and the recess in the revolving doorshaft may be reversed and the bead located on the shaft housing and therecess located on the wing.

The disc I serves to support the revolving door hardware by reason ofthe mounting of the disc with respect to the vertical shaft in a novelman ner. cially drawn tube indicated at 27 having four keyways indicatedat 28 extending the entire length of the tubular shaft. The lzeyways 28receive the radially extending ribs 29 which are integrally connectedwith the complementary parts of the shaft housing shown at The shafthousing 38 extends the entire length of tubular shaft 21 and is formedfrom complementary parts having groove and dovetailed connections 3|therebetween. The portions of the radially extending ribs 29 which coactto provide the dovetailed connections 3! also extend into thelongitudinally disposed grooves '28 in the tubular shaft 2'! forming arigid connection between the shaft 21 and housing 38. The housing 30 isdivided into three longitudinal sections, one section located above theupper disc, as represented at 32, one section intermediate the twodiscs, as represented at 33, and the third section below the lower disc,as represented at 3 5. The sections of the housing indicated at 3'1, 33,and 34 are secured to tubular shaft 21 in such manner as to lock thediscs I in position properly centered for support of the revolving doorhardware. The means which I employ for mounting The vertical shaft isformed from a spethe discs I in proper position with-respect to shaft 21consists of threaded spanner nuts 35 and 36. Spanner nut 36 engagesscrew threads on the lower end of shaft 2! and is adapted to fit withina recess provided by the cutaway end portions of ribs 29. Spanner nut 35is adapted to engage screw threads formed on the upper end of tubularshaft 21 and fit within the annular space between housing 36 and shaft2'! within a space provided by the foreshortening of ribs 29. A spannerwrench fitting within recesses 35a and 36a may be used in securing thespanner nuts 35 and 36 in position.

After the discs I have been assembled in position with respect totubular shaft 2? and locked in position by means of spanner nuts 35 andthe revolving door assembly is ready for mounting in the drum. I mayemploy various means for mounting the shaft with respect to the drum,and for purposes of explaining my invention I have illustrated the formof pintle support on the lower end of the door in accordance with theconstruction shown in John W. Shields application Serial No. 751,367,filed November 2, 1934, for Revolving door hardware.

The usual form of actuator device operative through a longitudinallyextending slot in tube 2'! and section 33 of the housing 36, is employedto control the position of the pintle 31 as indicated generally at 38.The upper end of the door is mounted in a very special manner whichenables the assembled door structure to be conveniently moved intoposition within the drum, while allowing the doors to swing out ofvertical position Without aifecting the carrying device or trolley.

In order to facilitate erection of the doors the assembly may becompleted outside or remote from the drum and the assembled doors movedto a position in which the pintle 3'! may be ejected by movement ofdevice 38 for mounting the doors with respect to bearing plate 39, andthen the upper end of the assembled tubular shaft and housing iscentered beneath the opening 40 in the ceiling of the drum to allow theshaft extension 4! to be passed through the trolley and screw-threadedinto the interior of the upper end of tubular shaft 21 until annularshoulder 42 abuts with the upper end of tubular shaft 27, and apertures42a aligned with the apertures Zia for the passage of set screws I8therethrough for locking shaft member M with respect to shaft 21. Shaftmember 4| passes through the trolley structure which I have showngenerally at 43 and is journaled therein through universal jointdesignated generally at 44 in Fig. 1. The weight of the door is carriedupon the thrust bearing designated generally at 45.

The revolving door mechanism is carried by discs I, the said mechanismserving to mount the wings of the revolving doors shown generally at 46.In order to mount the revolving doors with respect to the discs I, Iprovide a special construction of extruded body structure 2 havingvertically projecting and downwardly depending bosses 41, which extendin a substantially horizontal direction and provide means for securingthe escutcheon plates I5 and I6 on opposite sides of the wings of thedoor. The bosses 41' are extruded as part of the body structure 2 andserve as threaded recesses into which bolts 2I- may be passed throughaligned apertures in the escutcheon plates I5 and I6. The body structure2 is also provided with a boss 48 through which passes the pin I I. PinI I forms a pivot for a segmental shoe I2 as heretofore explained, forguiding the wing support in an annular path, defined by the annulargroove 23. 1

' The inner edges of each of the door wings 46 are covered by alongitudinally extending sealing-extruded member 50. The extruded member50 is shaped as shown more particularly in Figs. 16 and 20, and includesa capping portion 5| with side portions 52 thereon, and a centrallongitudinally extending rounded bead portion 53. The extruded member 50is formed in three sections corresponding to the three sections of thehousing 30, that is, sections 54, 55 and 56. Section 54 of the extrudedmember 50 is arranged above the disc I. Section 55 of the extrudedmember is ar ranged intermediate the upper and lower disc I, and section56 of theextruded member is arranged between the lower edges of the doorwings and the lower portion of disc I. Thus it will be observed that acompletely sealed connection is provided between the inner edges of doorwings and the shaft housing 30. This sealed connection extendsthroughout the length of the revolving door wings, including the movableparts constituting the connections adjacent disc I and the tubular shaft21. This sealed connection remains intact while the door wings are innormal position, and serves as an abutment when the door wings are movedto collapsed position under conditions of panic for all of the doorwings, except the wings which are moved to a position with the centralbead 53 thereon shifted out of contact with the housing 30.

This arrangement will be more clearly understood by considering thestructure of housing 30 which is provided with longitudinally extendingrecesses 5! for receiving the longitudinally extending bead 53 on thesections of the extruded member 50.

The abutment which is afforded by the coaction between the bead portions53 and the walls of the recesses 51 of housing 30 is such as to insure'astabilizing action as the wings are moved to collapsed position eithermanually or automatically under panic conditions. That is to say, theinner face of extruded member 58 bears against the face of the wall ofthe recessed portion 51 forming a. substantial restraining means for thedoor wings. This action is particularly helpful in the reassemblingoperation for the door wings as the stabilizing action tends to assistin the restoring of the door wings to radial position.

In order to more fully explain the manner in which the door wings arenormally maintained in radial position, reference is made to Fig. 5 ofthe drawings from which it will be observed that roller member 22mounted on pin I9 is normally urged into engagement with the notches, 58in the peripheral edges of the disc I at 90 peripheral displacement withrespect to each other. The roller members 22 are mounted in carriermember 3 and mounted on pin member I9. The carrier-member 3 has the endsthereof extending over the disc I which prevents displacement of carriermember 3 in any position. The carrier member 3 is continuously urgedtoward the main body portion 2 of the revolving door mechanism by meansof coil springs II acting against the adjustable tension nuts I3 carriedby rod members I3a. Rod members I3a are screw-threaded into theoppositely extending lugs 30. on the carrier 3 at one end and passfreely through apertures in end plate 8 disposed between escutcheonplates I5 and 1-6 at the opposite end. .End plate 8 is secured betweenescutcheon plates l5 and 16 by means of bolt members Zia which extendthrough apertures 2lb in enlarged end portions of the end plate 8. Therod members 130, also support the slidable spring abutment {which isfreely movable over rod members I311. The slidable spring abutment 4 isshaped intermediate the rod members [3a to provide a fork portion 4a.The slidable spring abutment 4 is also constructed of extruded brasswhich is also the material of end plate 8. The reason that fork portion4a is left open is that this form of construction facilitates extruding.The fork portion 4a serves as a means of connection for the end finger6b of the actuator E which is mounted for angular movement on theinterior of escutcheon plate I5. The actuator 6 contains a socketopening 6a therein into which a socket wrench (shown in dotted lines inFig. 5) may be introduced from the side of the door wing over whichescutcheon plate I5 is secured for imparting angular movement toactuator 6 for shifting the end finger 6b in the slot 4b in the forkportion 4a of slidable spring abutment 4 whereby translatory movement isimparted to the slidable spring abutment for temporarily withdrawing theforce of springs ll against carrier 3 allowing a retraction of roller 22and a collapsing of the door wing. The carrier 3 is slidable through theaperture 59 in the end of main housing 2 and, in order to providesufficient bearing for carrier 3 in main housing 2, the end of carrier 3projects beyond the extremity of housing 2 as shown in Fig. 5. The gapbetween the interior portion of carrier 3 and roller 22 is closed bymeans of filler block 1 which may be an extruded section of brass andwhich is secured in position in carrier 3 by means of pin 20.

In carrying out the manual operation of the roller locking device, Iprovide a set of compeneating springs l8 disposed between the slidablespring abutment 4 and the end plate 8 on rods l3a which resist themovement of the slidable spring abutment 4 in a position tending toreduce the eifect of coil springs ll. When manual force is removed fromthe socket wrench in socket 6a which is employed to angularly shift theactuator 6 the tension of coil springs I8 becomes eifective to restoreslidable spring abutment 4 to its original position, thus projectingroller 22 for a sufftcientdistance to allow the roller to enter notch 58with very light spring pressure. The amount of tension necessary tocompensate for the tension offered by coil springs I! is not large andfacilitates restoration of the roller 22 to normal locking position asthe revolving door wing is straightened out to radial position. In otherwords, coil springs l8 are s mmetrically arranged with respect to coilsprings ii on opposite sides of the slidable spring abutment so that theslidable spring abutment is compensated in movement for either a manualor an automatic operation of the roller locking device 22.

In order to fully understand the automatic feature of the locking deviceof my invention, it will be observed that an extruded trip member 5 issecured to the end of the carrier 3 by means of a dovetail connectionindicated at 5:1. By employing a dovetail connection between extrudedtrip member 5 and carrier 3, I am enabled to attach the automatic tripto the mechanism in a very simple manner where it is dimcult to work inthe restricted available space. The end of the extruded trip member 5 isaligned with the angularly movable actuator 6 and under conditionswherein roller 22 is abruptly subjected to tension tending to dislodgeroller member 22 from notch 58, the trip member 5 engages the remote endof actuator 6 and tends to angularly displace pin 61) which moves inslot 4b in fork portion 4a, and displaces slidable spring abutment 4away from coil spring ll, thus reducing the spring tension exertedagainst yoke 3 and facilitating the quick retraction of roller 2?.allowing the door wing to be quickly and automatically moved tocollapsed position. The compensating coil springs 18 which are ofreduced tension characteristic with respect to coil spring I! aredepressed by this automatic operation, storing up potential energy whichtends to restore the slidable spring abutment 4 to its normal positionfor again locking the revolving door in radial position when the door isreturned from collapsed position.

In order to allow full collapsed position of the revolving doors, Iohamfer the edges of the main body structure 2, as indicated at 2:1 asshown in Fig. 5. The reducing of the section at 2a allows the revolvingdoors to be shifted to a substantially parallel position in closeproximity one to the other under conditions of panic or collapse of thedoors.

It will be observed that the parts of the revolving door mechanism of myinvention have been designed to eliminate all castings with theaccompanying expense thereof. In lieu of castings, I form the severalparts from extruded metal thereby substantially decreasing the cost ofthe mechanism. The method of extruding the parts for the manufacture ofthe revolving door mechanism of my invention has been illustrated moreparticularly in Fig. 28. While I have shown the bead or sealing strip 53in process of extrusion, it will be understood that the same method isemployed for the main body structure 2, the carrier 3, filler block 1,shoes 9 and I2, plate 8, and other parts of the revolving door hardware.I have shown a die 68 having an aperture 6| therein shaped to thecontour of the section which is being extruded, which in the exampleillustrated is the shape of the sealing member 50. That is to say, thedie is shaped at 53a to allow the passage of material to form the head53 and shaped at 52a to allow the passage of material to form the flangeportions and is shaped for the passage of material to insure the recessin the rear of bead 53 and the flat surface adjacent thereto as shown.

A suitable housing 62 is provided adjacent die 60 to direct the material63 which is forced through the die head by means of plunger 8 operatedby any suitable mechanism. The extruded member formed from bronze may besubsequently cut in the desired lengths to provide the sections 54, 55,and 56 illustrated in Fig. 20. In the case of the main body structure 2the extruded member is sawed into relatively short lengths in formingthe hardware for the individual wing hangers.

As heretofore pointed out the bead 53 may be carried by shaft housing 30and recess 5'! may be formed on the inner edge of the door wing. Theextruded member 30 and extruded member 50 not only serve as a seal butalso constitute a stabilizer for the inner edge of the wing. There is noroller or pin entering into slot 24 to hold the inner edge of the wing,and the entering of head 53 into recess 51 serves to maintain the inneredge in place. Thus the wing is stabilized tiplicity of revolving doorwings, and sealing means disposed between the inner edges of the againstturning on the various shoes The head also acts as a fulcrum for therollerZZ.

The equalizing forceswhich are obtained by the coaction of coil springsl1 and I8 are such that either automatic or manual operation of the doorwing is very simple. Moreover, the balanced operation of the springs l1and l8v is such that manual reset of the locking roller 22 is readilyaccomplished.

I have found the structure of my invention highly practical inmanufacture and production and successful in its operation, and while Ihave described a preferred embodiment of my invention I desire that itmay be understood that modifications may be made and that no limitationsupon my invention are intended other than are imposed by the scope ofthe appended claims,

What I claim as new and desire to secure by Letters Patent of the UnitedStates is as follows:

1. Revolving door mechanism comprising in combination with a centralshaft member, a housing for said member having longitudinally extendingrecesses therein, a plurality of revolving door wings, and sealing andstabilizing means carried by the inner edges of each. of the revolvingdoor wings, said sealing and stabilizing means including a memberoperative to form an overlapping connection with the longitudinallyextending recesses in said housing,

2. Revolving door mechanism comprising in combination with a centralshaft member, a housing for said member, a plurality of revolving doorwings, and means for sealing the connection between the inner edges ofsaid door wings and said housing comprising longitudinally extendinginterengaging members shiftable in, varying angular relationships forcontinuously providing a stabilizing and substantially airtight sealbetween the door wings and said housing.

3. Revolving door mechanism comprising in combination with a centralshaft member, a housing for said member having longitudinally extendingrecesses therein, sealing and stabilizing means carried by the inneredges of each of the revolving door wings, said sealing, and stabilizingmeans including a central longitudinally extending portion engageable inthe longitudinally extending recesses, and operative tov establishabutting contact with the side portions of the said longitudinallyextending recesses.

4. Revolving door mechanism comprising in combination with a centralshaft member, a housing for said member having longitudinally extendingrecesses therein, sealing means carried by the inner edges of each ofthe revolving door wings, said sealing means including a centrallongitudinally extending bead iengageable within the recesses of saidhousing, and adapted to form abutments with the side walls of the saidrecesses in varying angular positions of said revolving door wings.

5. Revolving door mechanism comprising in combination with a centralshaft member, a housing for said member having longitudinally extendingrecesses therein, sealing means carried by the inner edges of therevolving door wings, comprising members having a central beadengageable within the recesses in said housing, said central beadprojecting with respect to the inner edge of the door and adapted toabut with the side walls of the said recesses in varying angularpositions of the revolving door wings.

6. Revolving door mechanism comprising in combination with a centralshaft member, a mulrevolving door wings and said shaft member comprisingextruded sections of metal having engaging complementary portionscoacting in overlapping relationship, one with respect to the other, andforming a substantially weatherproof seal in varying angular positionsof the revolving door wings.

7. Revolving door mechanism comprising in combination with a centralshaft member, a housing for said member having longitudinally extendingrecesses therein, revolving door wings, disc-like members for supportingsaid door wings, and sealing means carried by the inner edges of saidrevolving door wings, said housing and said sealing means being formedinto corresponding sections, said disc-like members being supported withrespect to said shaft member by means of the sections of said housing,the sections of said housing having longitudinally extending recesses,

and the sections of the sealing means on the inner edges of said doorscarrying projecting means adapted to interengage the recesses in thesections of said housing.

8. Revolving door mechanism comprising in combination with a centralshaft member and coacting revolving door wings, a plurality ofsectionalized housing members and coacting sealing members, disc-likemembers supported in spaced position by the sectionalized housingmembers with respect to-said shaft member, each of said disc-likemembers containing an annular groove and sets of quadrilaterallydisposed grooves a plurality of ribbed recesses in the sectionalizedhousing members, means projecting from the sectionalized sealing membersfor establishing an overlapping connection with the recesses in thesectionalized housing members, and means slid- I able in said annulargroove and providing pivotal connections for each of said door Wingswhereby said sealing members are engageable with and disengageable fromthe recesses in said housing 7 members.

9. Revolving door hardware comprising a supporting shaft, disc memberssupported with re- 7 their ends extending beyond each other and formingrelatively wide intersecting corner portions for the said grooves, andguide means connected with said hangers and operative in saidquadrilaterally arranged grooves and around said intersecting cornerportions for moving said doors from an assembled to a collapsedposition.

11. Revolving door hardware comprising a supporting shaft, disc memberssupported with respect to said shaft, revolving door Wings, hangers forsaid wings, said hangers embracing said disc members, said disc memberseach having an annular groove in one face thereof and a quadrilaterallyarranged groove in the opposite face thereof, and guide means carried bysaid hangers and extending into said grooves for controlling themovement of said hangers when the door wings are moved from an assembledto a collapsed position.

12. Revolving door hardware comprising a revolving door shaft, discssupported with respect to said shaft, revolving door wings, hangers forsaid wings, each of said discs having an annular groove in the upperface thereof, and quadrilaterally disposed grooves in the under facethereof, and guide means carried by each of said hangers and pivotedwith respect thereto, one of said guide means extending downwardly fromeach of said hangers and engaging the said annular grooves, and theother of said guide means extending upwardly from each of said hangersand engaging the quadrilaterally disposed grooves in the said discs.

13. Revolving door hardware comprising a revolving door shaft, a pair ofsupporting discs, and means for mounting said supporting discs withrespect to said shaft comprising aligned shaft housing sectionsincluding a lower section, an intermediate section, and an uppersection, said lower section serving to support one of said discs andsaid intermediate section serving to support the other of said discs inabutment with said upper section, means for securing said lower sectionand said upper section to said shaft, and longitudinally extendingrecesses formed in each of the sections of said housing and aligned onewith respect to the other for establishing a seal with respect to thecoacting revolving door wings.

14. Revolving door hardware comprising a supporting disc, a wing hangerincluding an extruded housing, extruded bosses formed integrally withsaid housing, and oppositely projecting pin guides formed integrallywith said extruded housing, said housing disposed to embrace oppositesides of said supporting disc, and pin members projecting through saidpin guides and engaging portions of said supporting disc.

15. Revolving door hardware comprising in combination with a revolvingdoor wing, a sealing bead carried by the inner extremity of therevolving door wing, the said sealing bead being constituted by amultiplicity of sections of extruded material and having alongitudinally extending rounded edge.

16. Locking means for revolving doors comprising in combination with adisc support, a wing hanger, a carrier supported with respect to saidwing hanger, a roller j'ournaled in said carrier and operating toperipherally engage notches disposed in predetermined portions of theperiphery of said disc support, a pair of coil springs V disposed inspaced parallel planes for exerting pressure radially inwardly forforcing said roller member in yielding engagement with the notchedperiphery of the'disc support.

17. Revolving door hardware comprising in combination with a supportingdisc, notched at intervals about the periphery thereof, a roller memberfor establishing locking engagement with the notched periphery of thedisc, a carrier for said roller member, and a pair of spring members.

engaging opposite sides of said carrier for exerting an inwardlydirected force thereon for yield ingly maintaining said roller member inengagement with the notched periphery of the disc.

18. Revolving door hardware comprising in combination with a supportingdisc notched at 90 intervals about the periphery thereof, a rollermember engageable in a predetermined notch, a carrier for said rollermember, spring means for normally urging said carrier towards saidsupporting disc, a trip member connected with said carrier and meansactuated by said trip member operative under conditions of abrupt forcestending to dislodge said roller member for immediately reducing thetension of said spring means for insuring the quick dislodgment of saidroller member from the coacting notch in said supporting disc.

19. Revolving door hardware comprising in combination with a supportingdisc notched at the periphery thereof, a roller member engageable with aselected notch in the periphery of the disc, a carrier for journalingsaid roller member, a slidable frame structure connected with saidcarrier, a trip member on said carrier, separate sets of spring memberseach operative upon said carrier and said frame structure, manuallyoperable means engaging said frame structure for releasing the tensionof said spring members on said roller member, and a projection on saiding the tension of said spring members on said roller member.

JOHN W. SHIELDS.

